MT46H16M32LF 데이터 시트보기 (PDF) - Micron Technology

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MT46H16M32LF

Mobile Low-Power DDR SDRAM

Micron Technology 

512Mb: x16, x32 Mobile LPDDR SDRAM

Electrical Specifications – AC Operating Conditions

Table 12: Electrical Characteristics and Recommended AC Operating Conditions (Continued)

Notes 1–9 apply to all the parameters in this table; VDD/VDDQ = 1.70–1.95V

-5

-54

-6

Parameter

Symbol Min Max Min Max Min Max

Data valid output window

n/a

(DVW)

tQH - tDQSQ tQH - tDQSQ tQH - tDQSQ

Half-clock period

tHP

tCH,

–

tCH,

–

tCH,

–

tCL

tCL

tCL

Data-out High-Z

CL = 3

tHZ

window from

CK/CK#

CL = 2

–

5.0

–

5.0

–

5.0

–

6.5

–

6.5

–

6.5

Data-out Low-Z window

from CK/CK#

tLZ

1.0

–

1.0

–

1.0

–

Address and control input

tIHF

0.9

–

1.0

–

1.1

–

hold time (fast slew rate)

Address and control input

tIHS

1.1

–

1.2

–

1.3

–

hold time (slow slew rate)

Address and control input

tISF

0.9

–

1.0

–

1.1

–

setup time (fast slew rate)

Address and control input

tISS

1.1

–

1.2

–

1.3

–

setup time (slow slew rate)

Address and control input

tIPW

2.3

–

2.5

–

2.6

–

pulse width

LOAD MODE REGISTER

command cycle time

tMRD

2

–

2

–

2

–

DQ–DQS hold, DQS to first

tQH

tHP -

–

tHP -

–

tHP -

–

DQ to go nonvalid, per

tQHS

tQHS

tQHS

access

Data hold skew factor

tQHS

–

0.5

–

0.5

–

0.65

ACTIVE-to-PRECHARGE

command

tRAS

40 70,000 42 70,000 42 70,000

ACTIVE to ACTIVE/ACTIVE

tRC

55

–

58.2

–

60

–

to AUTO REFRESH

command period

Active to read or write

delay

tRCD

15

–

16.2

–

18

–

Refresh period

tREF

–

64

–

64

–

64

Average periodic refresh

interval: 64Mb, 128Mb,

and 256Mb (x32)

tREFI

–

15.6

–

15.6

–

15.6

Average periodic refresh

interval: 256Mb, 512Mb,

1Gb, 2Gb

tREFI

–

7.8

–

7.8

–

7.8

AUTO REFRESH command

tRFC

72

–

72

–

72

–

period

-75

Min Max

tQH - tDQSQ

tCH,

–

tCL

–

6.0

–

6.5

1.0

–

1.3

–

1.5

–

1.3

–

1.5

–

tIS +

–

tIH

2

–

tHP -

–

tQHS

–

0.75

45 70,000

67.5

–

22.5

–

–

64

–

15.6

–

7.8

72

–

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

tCK

ns

ns

ns

ns

ns

ms

μs

μs

ns

Notes

17

18

19, 20

19

15, 21

15, 21

16

13, 17

22

23

24

24

24

PDF: 09005aef83dd2b3e

t67m_512mb_mobile_lpddr.pdf - Rev. H 06/13 EN

27

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